The Final CSO Post Construction Monitoring Program and Performance Assessment Report published in 2021 lists the compliance status of the outfalls and plans for making further progress. Development of an Updated CSO Control Plan for Variance waters. MWRA and CSO Communities continue efforts to Reduce CSOs. Possible deadline extension to 2027.

The Federal Court overseeing the Boston Harbor Project including the Long Term CSO Control Plan, has required MWRA to provide ongoing reports and briefings on the further progress toward meeting the long-term plan goals.